Packing list: Suitable for series design. Fully meet your long-term replacement needs to that your robot always performs at its best. Excellent performance: The tyre design is non-slip and has strong adhesion, which effectively reduces noise during operation and provides a quiet and comfortable cleaning experience. The tire pattern has been carefully designed to increase friction and that the robot can drive steadily on a variety of surfaces. Easy installation: Tire replacement is simple and quick, without professional tools. : The selection of high-quality rubber materials to that the tire has a longer service life and better wear resistance. Whether it is daily cleaning or frequent use, it can maintain its excellent performance and efficiency. Colour:Black Material:rubber Package Contents: 9 pair * Replacement tire Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.